mirror of
https://github.com/restic/restic.git
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117 lines
3.2 KiB
Go
117 lines
3.2 KiB
Go
/*
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* Minio Go Library for Amazon S3 Compatible Cloud Storage
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* Copyright 2015-2017 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package policy
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import "github.com/minio/minio-go/pkg/set"
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// ConditionKeyMap - map of policy condition key and value.
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type ConditionKeyMap map[string]set.StringSet
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// Add - adds key and value. The value is appended If key already exists.
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func (ckm ConditionKeyMap) Add(key string, value set.StringSet) {
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if v, ok := ckm[key]; ok {
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ckm[key] = v.Union(value)
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} else {
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ckm[key] = set.CopyStringSet(value)
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}
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}
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// Remove - removes value of given key. If key has empty after removal, the key is also removed.
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func (ckm ConditionKeyMap) Remove(key string, value set.StringSet) {
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if v, ok := ckm[key]; ok {
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if value != nil {
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ckm[key] = v.Difference(value)
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}
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if ckm[key].IsEmpty() {
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delete(ckm, key)
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}
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}
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}
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// RemoveKey - removes key and its value.
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func (ckm ConditionKeyMap) RemoveKey(key string) {
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if _, ok := ckm[key]; ok {
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delete(ckm, key)
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}
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}
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// CopyConditionKeyMap - returns new copy of given ConditionKeyMap.
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func CopyConditionKeyMap(condKeyMap ConditionKeyMap) ConditionKeyMap {
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out := make(ConditionKeyMap)
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for k, v := range condKeyMap {
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out[k] = set.CopyStringSet(v)
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}
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return out
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}
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// mergeConditionKeyMap - returns a new ConditionKeyMap which contains merged key/value of given two ConditionKeyMap.
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func mergeConditionKeyMap(condKeyMap1 ConditionKeyMap, condKeyMap2 ConditionKeyMap) ConditionKeyMap {
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out := CopyConditionKeyMap(condKeyMap1)
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for k, v := range condKeyMap2 {
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if ev, ok := out[k]; ok {
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out[k] = ev.Union(v)
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} else {
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out[k] = set.CopyStringSet(v)
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}
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}
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return out
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}
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// ConditionMap - map of condition and conditional values.
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type ConditionMap map[string]ConditionKeyMap
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// Add - adds condition key and condition value. The value is appended if key already exists.
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func (cond ConditionMap) Add(condKey string, condKeyMap ConditionKeyMap) {
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if v, ok := cond[condKey]; ok {
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cond[condKey] = mergeConditionKeyMap(v, condKeyMap)
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} else {
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cond[condKey] = CopyConditionKeyMap(condKeyMap)
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}
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}
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// Remove - removes condition key and its value.
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func (cond ConditionMap) Remove(condKey string) {
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if _, ok := cond[condKey]; ok {
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delete(cond, condKey)
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}
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}
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// mergeConditionMap - returns new ConditionMap which contains merged key/value of two ConditionMap.
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func mergeConditionMap(condMap1 ConditionMap, condMap2 ConditionMap) ConditionMap {
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out := make(ConditionMap)
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for k, v := range condMap1 {
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out[k] = CopyConditionKeyMap(v)
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}
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for k, v := range condMap2 {
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if ev, ok := out[k]; ok {
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out[k] = mergeConditionKeyMap(ev, v)
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} else {
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out[k] = CopyConditionKeyMap(v)
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}
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}
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return out
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}
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